56 



MANUAL OF TREE DISEASES 



On pine (three and two to three needle, pitch pines) 

 R. eampylopoda (Engelm.) Piper. Pacific Coast 

 R. cryptopoda (Engelm.) Coville. Central and southern Rocky 



Mountains 

 iJ. americana (Nutt.) Kuntze. Rocky Mountains to Sierra Nevada 



Mountains 



Fig. 3. — Mistletoe (Phoradendron pauciftorum) growing on white fir. 



The only representative of the dwarf mistletoes occurring 

 in eastern United States is R. pn^illa, which causes witches'- 

 brooms on spruce. A discussion of this disease will be found 

 on page 321. 



